Benjamin d



BENJAMIN D. STEVENS, OF DEOORAH, IOWA, ASSIGNOR TO HIMSELF AND CHARLESGILL, OF IIXE'IER, NEW HAMPSHIRE.

Letters Pat/mt 1Y0. 66,411, dated July 2, 1867.

IMPROVBD MACHINE FORI'ORMING SHEET-METAL PANSa TO ALL WHOM IT MAYOONGERN: l l 4 Beit known that I, BENJAMIN D STEVENS, of Decorah', inthe county of Winneshek, and State of Iowa, have invented an ImprovedMachine for Forming Bake-Pans, and other sheetmetal vessels ofrectangular form; and I do hereby declare that the following ist/a fulland exact description thereof, reference being had to the accompanyingdrawings,making part of this specification@ l Figure 1 being a top viewof the niahine spread'open ready for use. l

Figure 2, a cross-section, showing/the position of parts when thesheetfrnetal is inserted ready to bend, and also after the bending isaccomplished.

Like letters designate corresponding parts in both ofthe iigures.

The machine has a central supporting-bar or bed-piece, B, which issecured to the bench of the workman. On one edge, is hinged, by/liingescid, a clamp-bar o rjaw, A, which is provided with a. narrow groove, a,for the reception of the edge/oi'l the sheet of metal to be bent up intoform. On the other edge of the bed-piece B is hinged, by hinges gig, abending-bar or former, lC, which is provided with a handle, I), foroperating it. In addition to the/climp-bar A, for bending the sides ofthe vessel, there is a shorter, distinct clamp-bar, F, hinged by a hinge9r'hinges,f, to the same edge of the bed-piece, as shown, for bendingthe ends oi' the article; and there maybe more than two clamp-bars, ofdiierent lengths, to suit different sizes of pans or other articles, allto beu/sed in connection with the same former C; or the latter may bedivided into different ones, to correspond with the differentclamping-bars, but this `is notnecessarymhile the use of the separatorclamp-bars for the different lengths of the sides of the articles to beformed is essential with this instrument, since, after two oppositesides of'an .article are bent up, the clamp-bar for the other sides mustpass between those already formed. The depth of the groove a in theclamp-bar is suiiieient for the highest sides of articles to b'et'ormed.Then when a less depth is wanted, the proper gauge is determined by pinsor screws c c, inserted into holes in the clamp-bar A, at dil'erentdistances from. the edge thereof, substantially as represented, for theedge of the metal to bear against. These gauge-pins c c may be used inconnection with corresponding holes b b in the bedpiece, to keep the`two parts `rmly and exactly' in place. Holes b b, in differentpositions, areused to correspend with the different positions of thegauge-holes in the clarnpbar A.

The sheet metal is inserted as indicated by the horizontal blue lines xin iig. 2, and then the forming-bar`C is turned up, as shown by redlinesin'the same figure, thus bending the metal up as represented.

What I claim'as my invention, and desire to secure by Letters Patent, isv v I The combination `and arrangement of the bed-piece B and theclamp-bar A and forming-bar C, hinged to said-bed-piece on oppositesides thereof, substantially as and for thepurpose herein specified.

I also claim hinging separate clamp-bars A and F to the same bed-pieceB, for forming sides ot di'erent lengths, as herein set forth. I l

I also claim the gauge-pins c c, applied'in combination with the groovedclamp-bar A for the purpose specified.

The above speciicaticn ofmy improved machine for forming bake-pans,andmther-sheet-metal vessels of rectangular shape, signed by me thisfourteenth day of September, 1866. Y

v BENJ'N. D. STEVENS.

Witnesses:

N. Befehlen, JOHN R. SLAcx.

